A. the bar is not a magnet
B. Y is a north pole
C. Y is a South pole
D. Y repels coil X
Correct Answer: Option B
B. Y is a north pole
Explanation
N – S magnet is moved towards a coil production clockwise direction of current in the coil.
– This is the same as a coil moved away from S-N (Y – North pole)
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![It takes 4 minutes to boil a quantity of water using an electrical heating coil. How long will it take to boil the same quantity of water using the same coil if the current is doubled? [Neglect any external heat losses]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "It takes 4 minutes to boil a quantity of water using an electrical heating coil. How long will it take to boil the same quantity of water using the same coil if the current is doubled? [Neglect any external heat losses]")